American Football Rules IFAF Approved Ruling 3-2-3:V

V. Team A scores a touchdown during a down in which time expires. After the touchdown, but before the try, either team fouls. RULING: The period is extended only for the try. The penalty may be enforced on the try or the succeeding kickoff, which is in the next period. [Cited by 10-2-5-c, 3-2-3-a]